Seiko Cal. 6135 - 640

The Seiko 6135-640 represents an important milestone in Seiko's 1993 lineup. Powered by the 6135 caliber with 23j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-e648c14dec2d]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1993

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